Device fob



S. J. CAMPBELL.

DEVICE FOR HOLDlNG ANVILS FOR TRUING.

APPLICATION man MAR. 13. 1916.

1 l 95A4p9. Patented Aug. 22, 1916.

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SAMUEL J'. CAMPBELL, OF CHEIBOYGAN, MICHIGAN.

DEVICE FOR HOLDING ANVILS FOR TRUING.

Application filed March 13, 1916.

To all whom it may concern.

Be it known that I, SAMUEL J. CAMPBELL, a subject of the King of GreatBritain and Ireland, residing at Gheboygan, in the county of Cheboyganand State of Michigan, have invented a new and useful Device for HoldinAnvils for Truing, of which the following is a. specification.

The present invention relates to anovel means for insuring the accurategrinding or working down of the active faces of anvils, and the like,such as are used in saw swaging.

It is well known to those skilled in the art that these anvils haveworking faces, which are disposed at various angles on the outer ends.of the anvils, according to the nature of the work to which the anvilsare applied. It is also well known that these anvil faces becomeindented, nicked, grooved, and the like, which destroys the accuracy ofthe anvils, and which necessitates the frequent grinding or working downof these active faces to make the same true. This'truing of the anvilfaces has heretofore been done by hand, and it has been found that it ispractically impossible, even with great care and skill to' work downthese anvil faces with the uniformity and truenes's required for goodwork in saw swaging.

An object of the present invention is to overcome these inaccuratemethods and means of grinding down the active faces of anvils, and forthis purpose this invention provides a device with a gage plate, and aholder which rigidly holds an anvil, of any type, or having an activeface disposed at practically any angle, in such position that the activeface lies in the plane of the gage plate, so that when the active faceis ground or worked down, the gage plate will insure the grinding downof the anvil with a positive mechanical trueness not'her'etoforeattained. V

Another object of the present invention is to provide a relatively lightdevice, which may be supported in the hand, for holding the gage plateagainst an emery wheel, or the like, the device being ofsuch structurethat, although held in the hand, it insures the accurate grinding orworking down of the active faces of the anvils; to provide adevice witha base portion having thereon a holder for securely clamping an anvil,and to provide means to admit of the adjustment of the holder intovarious a gles, so as to Specification of Letters Patent.

Patented Aug. 22, 1916.

Serial No. 83,902.

correctly present the active faces of anvils to the grinding elements;to provide a holder on the device which is easily adjusted, and whichhas such a form as to correctly and definitely determine the positionsof the holder corresponding to anvil faces of various angles; and toprovide the abutting or gage face of the device with a detachable wearplate adapted to prevent undue wear on the device, by contact with thegrinding element, and to admit the use of a detachable wear platerenewable from time to time.

Other objects and advantages of the invention will be fully brought outin the following specific disclosure of the present preferred embodimentof this invention, the same being illustrated in the accompanyingdrawing, wherein- Figure 1 is a perspective view of the improved device,showing the outer face of the gage plate or portion of the device whichis adapted to be held against a grinding element, the view showing theactive face of an anvil adjusted into proper position in the plane ofthe gage face. Fig. 2 is a top plan view of the same. Fig. 3 is ahorizontal sectional view, taken through the device, through the top ofthe holder immediately above the anvil clamped therein. Fig. 4: is asimilar view, showing the holder adjusted into a difi'erent angularposition than that shown in Fig. 3, and showing the correspondingadjustment of the anvil in the holder to project the angular face of theanvil through the gage plate. Fig. 5 is a transverse section, takenthrough the device on a line through the holder, showing the partsadjusted in the position of Fig. 1. Fig. 6 is a. longitudinal verticalsection, taken centrally through the device, looking forwardly towardtheinner side of the gage plate. Figs. 7 and 8 are detail perspective viewsof two of many various types of anvils which are used, and which may beeasily adjusted and clamped in the device of this invention.

Referring to this drawing, wherein like parts are designated by similarnumerals of reference throughout the several views, the devicecomprises, broadly, a. base member to be held in the hand, and pressedagainst a grinding element, such as an emery wheel; and a holder, whichis mounted for adjustment on this base member, and which carries,securely clamped therein, anvils of various types, the holder beingadjustable,

so as to present the active faces of various types of anvils to the gageplate of the base member.

The base member comprises a flat plate 10 having, in upwardly spacedrelation to the lower edge of the plate 10, a rearwardly extending baseflange 11, and having above the flange 11, an opening 12 extendingthrough the plate 10. The plate 10 constitutes a gage plate, and has atrue, flat uninterrupted outer face. The opening 12, which extendsthrough the gage plate 10 has its lower marginal edge in the plane ofthe upper face of the base flange 11, so that the opening 12 risespractically from the upper face of the base flange 11. The opening 12 isof substantial length, as shown in Figs. 1 and 6. To protect the outerface of the gage plate 10, it may be found desirable to use a wear orface plate 13. This wear plate 13 is relatively thin and is held to thegage plate 10 by means of tongues 14 integral with the marginal edges ofthe wear plate 13, and which are overturned adjacent the marginal edgesof the gage plate 10. By lifting the tongues 14, the wear plate 13 maybe easily removed from the gage plate.

The base member carries the holder. The holder is in the form of asubstantially U-shaped frame 15 lying horizontally upon the upper faceof the base flange 11, so that the base flange 11 closes the bottom orlower end of the frame 15 of the holder. The extremities of the U-shapedframe 15 terminate in vertical flat edges 16, which are spaced apart adistance equal to at least the length of the opening 12 in the gageplate 10, and are adapted to abut flat against the inner face of thegage plate 10, at the opposite sides of the opening 12, as shown inFigs. 1, 2, 3, 5 and 6. The holder frame 15 is held in position by ananchoring ear 17 which projects from one side of the frame 15 and thelower edge thereof, the ear constituting an integral portion of the sideof the frame, which is bent at right angles to the side, and has itslower face in the plane of the lower edge of the frame 15, so that theholder with its anchoring ear 17 lies flat upon the upper face of thebase flange 11. This anchoring car 17 carries a depending threaded stem18. The stem 18 is preferably welded and headed, or otherwise suitablysecured to the ear 17. The threaded lower end of the stem 18 projectsdownwardly through an arcuate slot 19 formed in the base plate 11 on thearc of a circle, the geometric center of which is substantially in thecentral portion of the opening 12, so that when the ear 17 is moved overthe base plate 11, it is guided by the stem 18 in the slot 19 to swingthe holder 15 into various angular positions at the inner side of theopening 12. It will be noted that the inner edge of the ear 17 isbeveled longitudinally as at 20. This edge 20 is a straight edge, whichlies substantially at a5 degrees to the adjacent side of the holder 15.edge 20 is adapted to abut against the inner face of the gage plate 10,as shown in Fig. 4, whereby to correctly determine the positioning ofthe holder 15 in a predetermined angle with respect to the plane of thegage plate 10.

The base flange 11 is provided with a graduated scale 21, which iscurved concentric with the slot 19, so as to cotiperate with an indexpoint 22, upon the outer end of the anchoring ear 17 adapted to traversethe scale 21, and determine the various angular adjustments of theholder 15. The cap nut 23 is threaded upon the lower end of thestem 18,and is of such diameter as to bind against the lower face of the baseflange 11 upon the opposite sides of the slot 19 to firmly bind theanchoring ear 17 in adjusted position. Preferably a washer 24 isinterposed between the base flange and the cap nut 23 to insure a firmbinding action. The cap nut 23 is provided with a bar 25 slidably anddiametrically engaging through the outer end thereof to serve as ahandle to admit of the easy turning of the cap nut 23 withoutinterference from the depending lower end of the gage plate 10.

The

The U-shaped holder 15 is adapted to retain an anvil 26 therein. Theseanvils are made in very many different shapes and forms, and have faceswhich are disposed in many different angles. As shown in Figs. 1 to 6,the anvil 26 comprises a bar beveled at its longitudinal edges and beingvertically beveled at its corners to thus provide flat opposite endworking or active faces, lying at right angles to the axis of the bodyof the anvil. To grind these active faces, indicated at 27, it isnecessary to rigidly hold the anvil 26 in true rectangular relation tothe plane (f the gage plate 10, as clearly shown by determining theposition of the holder frame 15, and clamping it by tightening the capnut 23. In Fig. 3 of the drawing, the ends of the frame 15 are shown asabutting the inner face of the gage plate 10. This holds the frame inright angular relation with respect to the gage plate 10. The anvil 26is placed in the holder 15 with its lower side resting flat upon thebase flange 11. A lateral binding thumb screw 28 is threaded through theouter side of the holder 15, and engages the adjacent side of the anvil26 to force and clamp the same over against the opposite side of theholder 15. The anvil 26, therefore, lies in one side of the holderagainst the side thereof, so that the same is held in true rectangularrelation with the gage plate 10. A combined thrust and re taining thumbscrew 29 is threaded through the inner end of the frame 15, toward theinner side thereof, and is adapted to engage the inner end of the anvil26 to force the anvil outwardly so as to dispose the active face 27thereof substantially in the plane of the gage plate 10, althoughadvanced sufliciently to grind or smooth down the working face 27, thegage plate 20 serving to guide and hold the anvil against the grindingelement. The anvil 26 is held from springing up out of the holder 15 bymeans of a top binding thumb screw 30. This thumb screw 30 is threadedoutwardly through an inturned lug 31, which overhangs the outer end ofthe frame 15. The lug 31 is a continuation of the inner side of theU-shaped frame, and is merely turned over from the upper edge thereof,as clearly shown in Fig. 6. Thus, the anvil 26 is held down against theupper face of the base flange 11 to lie in substantially a horizontalplane. The anvil 26 is also held flat against the inner side of theholder to insure the correct angular adjustment of the anvil with theholder and with the gage plate 10. The thumb screw 29 admits of thegradual advancement of the working face 27 of the anvil against thegrinding element.

From Fig. 1, it will be noted that the frame 15 may be swung into anangle of substantially 45 degrees. In this instance, the thrust screw 29is turned up into the holder to project the anvil 26 considerably beyondthe same, so as to extend the beveled edge 32 beyond the gage plate 10.It is thus understood from the adjustments shown in Figs. 3 and 4, theslot 19, and the graduated scale 21 that the holder 15 may be correctlypositioned in any desired angle, and may be secured at that angle, so asto accommodate anvils having active faces of various angular formations.The thrust screw 29 is provided with a lock nut 33, threaded upon theouter end of the screw 29 and adapted to be turned up against the innerend of the frame 15 to bind the screw 29 in the frame. When the anvil 26is adjusted into the required position, the base member may be picked upin the hand and pressed against an emery wheel, abrading belt, or anyother device or mechanism for grinding or working down the active facesof the anvils. The gage plate 10 positively and mechanically insures theaccurate and true grinding of the face of the anvil, for the anvil isprojected beyond the gage plate suflicient only to contact at all pointswith the grinding element, when the latter lies flat against the outerside of the gage plate 10, or the outer face of the protecting plate 13,if the same be employed.

In Fig. 7, an anvil 26 is disclosed, which has a pair of working faces27 arranged at angles to each other of substantially 15 degrees. It isunderstood that these working faces 27 may be of any desired angle andthat by grinding down one of the faces 27, and then overturning theanvil 26 in the &

holder 16, the opposite face 27 may be readily ground.

Fig. 8 shows an anvil 26 the same having a substantially cylindricalshank or stem and having an angular head provided with the lateralworking faces 27* and the end or flat working face 27. The shank 26 isrelatively small as compared with the shanks of the anvils 26 and 26.Therefore, the lateral and the top thumb screws 28 and 30 willaccordingly be turned in to a greater extent. It will be noted from Fig.8, however, that the inner side of the anvil 26 is flush with theinnerside of the head of the anvil, so that the anvil 26 may lie flatagainst the inner side of the holder 15. It is thus seen that the deviceof this invention may be used with practically any type of anvil whichmay be constructed or used in saw swaging, or other closely allied arts.

The holder 15 extends longitudinally backward from the opening 12 in thegage plate 10, and presents an inner flat face along the inner side ofthe holder 15 which is held, by the depending stem 18 and the sides ofthe slot 19, from inward displacement with respect to the inner marginaledge of the opening 12. Thus, the clamping screws are free to bind anytype of anvil against the inner guiding face of the holder withoutforcing the anvil out of alinement with the opening 12. This inner fiatface of the holder determines the correct position of the anvil in theholder after the latter has been adjusted upon the base memher. Thethumb screw 29 may be turned inwardly to advance the anvil 26 along theguiding face or side of the holder, so as to project the working face 27of the anvil the desired distance outwardly through the opening 12.

It is, of course, understood that it is within the scope of the presentinvention to modify and change the above specifically described device,within the scope of the claims, to adapt the device to various de signsand forms found practical and desirable in the different uses of thesame.

That is claimed is 1. A device for holding anvils while tru-- ing thesame, comprising a base member having a flat gage plate thereon with ananvil receiving opening therethrough, and an anvil holder adjustablymounted on the base member at the inner side of the gage plate and atthe side of the opening to project variously formed active anvil facesat the desired angle through said opening.

2. A device for holding anvils while truing the same comprising a basemember having a gage plate provided with an opening therethrough, aholder on the base member to receive an anvil, gripping means in theholder to secure the anvil therein, said holder being adjustable on thebase member into various angles against the gage plate and said grippingmeans being adjustable, whereby the anvil may be held at the requiredangle, and may be projected through said opening to dispose the activeface of the anvil substantially in the plane of the outer face of thegage plate.

3. A device for holding anvils while truing the same comprising a basemember with a gage plate, an anvil holder on the base member, andadvancing means for engagement with the anvil in the holder to projectthe same from the holder into the plane of the gage plate.

at. A device for holding anvils while 'truiug the same comprising avbase member having a gage plate, a holder adjustably mounted on the basemember and having a longitudinal guiding inner face, means to hold theanvil against the guiding face, and means for advancing the anvil alongthe guiding face to project the same beyond the gage plate.

5. A device for holding anvils while truing the same, comprising a basemember provided with a gage plate having an anvil receiving openingtherein, a holder adjustably mounted on the base member, a clampengaging the holder and the base member to secure the holder to the basemember when the holder is adjusted, and means in the holder for ri idl Ibindin an anvil therein D D 7 said means being ad ustable to accommodateanvils of difl'erent sizes and to project the anvil therein into saidopening to retain the active face of the anvil substantially in theouter face of the gage plate. I

6. A device for holding anvils while truing the same con'iprising a basemember having a base flange and a gage plate rising from one edge of theflange, a holder slidable upon the upper face of the base flange andhaving a laterally extending car at its lower edge adapted to lie flatupon the upper face of the base flange, gripping means in the holder forengaging and securing an anvil therein, and a clamp engaging said earand said base flange to bind the ear to the latter when said holder isadjusted into the desired position against the gage plate.

7 A device for holding anvils while truing the same, comprising a basemember having a base flange and an upstanding gage plate at one edge ofthe flange, a holder adjustable upon said base flange, top and lateralclamping screws carried by the holder for engagement with the top andside of an anvil placed in the holder, and feeding means carried by theholder for engagement with the anvil to advance the same outwardly fromthe holder in the direction of the gage plate.

8. A device for holding anvils whiletruing the same comprising a basemember having a base flange and a gage plate extending along oneedge ofsaid flange, an anvil holder carried by the base flange, a protectingplate lying against the outer surface of the gage plate, and means fordetachably holding the protecting plate against the gage plate.

9. In combination with the base member having a base flange and a gageplate'arranged at right angles to each other, and said plate having anopening, a holder for the anvil slidable upon the said flange at oneside of said opening to project the anvil therethrough, an earprojecting from the holder, an arcuate slot provided in the flange, aclamping device passed through the slot and engaging the ear, and meansprovided in and carried by the holder for gripping the anvil.

10. In combination with the base member having a gage plate providedwith an opening, a holder for the anvil composed of a substantiallyU-shaped frame, said frame being arranged at one side of the saidopening, so as to project the anvil therethrough, a lateral bindingscrew, a top binding screw and a combined thrust and retaining screw forthe anvil in the holder, and means for mounting the said holder in thebase member either in line with said opening or at an angle thereto. r

In testimony that I claim the foregoing as my own, I have hereto aifiXedmy signature in the presence of two witnesses.

SAMUEL J. CAMPBELL.

Witnesses ANNIE CAMPBELL, WARD I. WALLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

